I don’t use Twitter anymore. I think it’s overrated. However, I think Twitter is just like any other piece of technology in that it’s neither good nor bad. It’s a neutral tool that can be used for whatever purpose you want. Now, the question is how much do you trust yourself, and how much access to tools like this do you want to have? I personally think that denying yourself these tools is damaging to your self-esteem and will only make you doubt your ability to fight your yetzer hara, which in turn will engender more fear and can be debilitating. But different people make different choices.